via the C<=~> or C<!~> operator, the $_ string is searched. (The
string specified with C<=~> need not be an lvalue--it may be the
result of an expression evaluation, but remember the C<=~> binds
-rather tightly.) See also L<perlre>. See L<perllocale> for
-discussion of additional considerations that apply when C<use locale>
-is in effect.
+rather tightly.) See also L<perlre>.
Options are as described in C<qr//> above; in addition, the following match
process modifiers are available:
the variable is interpolated, use the C</o> option. If the pattern
evaluates to the empty string, the last successfully executed regular
expression is used instead. See L<perlre> for further explanation on these.
-See L<perllocale> for discussion of additional considerations that apply
-when C<use locale> is in effect.
Options are as with m// with the addition of the following replacement
specific options: